package cn.itcast.bos.web.action.base;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Join;
import javax.persistence.criteria.JoinType;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;

import org.apache.commons.lang3.StringUtils;
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.apache.struts2.convention.annotation.Result;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.stereotype.Controller;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

import cn.itcast.bos.domain.base.Courier;
import cn.itcast.bos.service.base.CourierService;
@ParentPackage("json-default")
@Namespace("/")
@Controller
@Scope("prototype")
public class CourierAction extends ActionSupport implements ModelDriven<Courier>{

	//模型驱动
	private Courier courier=new Courier();
	@Override
	public Courier getModel() {
		// TODO Auto-generated method stub
		return courier;
	}
	@Autowired
	private CourierService courierService;
//添加取派员方法
	@Action(value="courier_save",results={@Result(name="success",location="./pages/base/courier.html",type="redirect")})
	public String save(){
		courierService.save(courier);
		return SUCCESS;
		
	}
	private int page;
	private int rows;
	public void setPage(int page) {
		this.page = page;
	}

	public void setRows(int rows) {
		this.rows = rows;
	}

	@Action(value="courier_pagequery",results={@Result(name="success",type="json")})
	public String pagequery(){
		Pageable pageable = new PageRequest(page-1, rows);
		Specification<Courier> specification = new Specification<Courier>() {

			@Override
			public Predicate toPredicate(Root<Courier> root, CriteriaQuery<?> query, CriteriaBuilder cb) {
				List<Predicate>list = new ArrayList<Predicate>();
				// TODO Auto-generated method stub
				//当前查询root跟对象Courier
				//单表查询 (查询当前对象 对应 数据表)
				if(StringUtils.isNotBlank(courier.getCourierNum())){
					//进行快递员工号查询
					//courierNum=? 
					Predicate p1 =  cb.equal(root.get("courierNum").as(String.class), courier.getCourierNum());
					list.add(p1);
				}
				if(StringUtils.isNotBlank(courier.getCompany())){
					//进行快递员工号查询
					//courierNum=? 
					Predicate p2 = cb.like(root.get("company").as(String.class),"%"+ courier.getCompany()+"%");
					list.add(p2);
				}
				if(StringUtils.isNotBlank(courier.getType())){
					//进行快递员工号查询
					//courierNum=? 
					Predicate p3 = cb.like(root.get("type").as(String.class),"%"+ courier.getType()+"%");
					list.add(p3);
				}
				Join<Object, Object> standardRoot = root.join("standard",JoinType.INNER);
				if(courier.getStandard()!=null&&StringUtils.isNotBlank(courier.getStandard().getName())){
				Predicate p4 = cb.like(standardRoot.get("name").as(String.class), "%"+courier.getStandard().getName()+"%");
				list.add(p4);
				};
				//predicate的使用起到的是泛型的作用
				return cb.and(list.toArray(new Predicate[0]));
			}
		};
		Page<Courier>pageData =  courierService.pagequery(specification,pageable);
		Map<String,Object>result=new HashMap();
		result.put("totle", pageData.getTotalElements());
		result.put("rows", pageData.getContent());
		//结果注入值站的顶部
		ActionContext.getContext().getValueStack().push(result);
		return SUCCESS;
		
	}
	private String ids;


	public void setIds(String ids) {
		this.ids = ids;
	}

	@Action(value="courier_delBatch",results={@Result(name="success",location="./pages/base/courier.html",type="redirect")})
	public String courier_delBatch(){
		String[] split = ids.split(",");
		courierService.delBatch(split);
		return SUCCESS;
		
	}
}
